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參數(shù)資料
| 型號(hào)： | A8958 |
| 廠商： | Allegro MicroSystems, Inc. |
| 英文描述： | Voice-Coil Motor Driver(音頻線圈電機(jī)驅(qū)動(dòng)器) |
| 中文描述： | 語(yǔ)音線圈電動(dòng)機(jī)驅(qū)動(dòng)器（音頻線圈電機(jī)驅(qū)動(dòng)器） |
| 文件頁(yè)數(shù)： | 5/8頁(yè) |
| 文件大?。?/td> | 113K |
| 代理商： | A8958 |
8958
VOICE COIL
MOTOR DRIVER
www.allegromicro.com
Term.
Terminal Name
Function
1
LOGIC SUPPLY
V
CC
; logic supply voltage.
2
INHIBIT
An active-high logic input that inhibits the output stages without initiating a park.
3 & 4
UV
1
and UV
2
Under-voltage detection inputs. If not used, these terminals must be connected
to the logic supply (V
CC
).
5
LIMIT
A tri-state input that forces the output of amplifier A into saturation in either direction,
or allows normal linear operation.
6 & 7
GROUND
AB
Power amplifiers
’
ground and thermal heat sink.
8
PARK VOLTAGE
Auxiliary inverting input to power amplifier A.
9
SENSE
IN
–
Inverting input to current sense error amplifer.
10
IN
A+
Non-inverting input to power amplifier A.
11
IN
A
–
Inverting input to power amplifier A.
12
OUT
A
Power amplifier A output to voice coil motor.
13
OUT
B
Power amplifier B output to voice coil motor.
14
LOAD SUPPLY
V
BB
; load supply voltage.
15
IN
B
–
Inverting input to power amplifier B.
16
IN
B+
Non-inverting input to power amplifier B.
17
SENSE
IN+
Non-inverting input to current sense error amplifer.
18 & 19
GROUND
AB
Power amplifiers
’
ground and thermal heat sink.
20
PWR OK
A logic low at this output indicates an under-voltage condition.
21
GROUND
Circuit reference.
22
PARK
An active-high logic input that activates the park function.
23
PARK DRIVE
Power transistor for retract current control on power down or park command.
24
SENSE
OUT
Output of current sense error amplifier.
TERMINAL FUNCTIONS
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